and whoso disputeth with thee concerning him, after the knowledge which hath come unto thee, say (unto him): come! we will summon our sons and your sons, and our women and your women, and ourselves and yourselves, then we will pray humbly (to our lord) and (solemnly) invoke the curse of allah upon those who lie. (61)

and if they turn away, then lo! allah is aware of (who are) the corrupters. (63)

فَإِن تَوَلَّوْاْ فَإِنَّ اللّهَ عَلِيمٌ بِالْمُفْسِدِينَ ﴿63﴾

say: o people of the scripture! come to an agreement between us and you: that we shall worship none but allah, and that we shall ascribe no partner unto him, and that none of us shall take others for lords beside allah. and if they turn away, then say: bear witness that we are they who have surrendered (unto him). (64)